Demi Lovato is happy to sacrifice her privacy to help people

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"Yeah, it's been difficult," Lovato said. "I'm not the type of person that loves the fame aspect of it. I would rather sacrifice my privacy to help people, not just with my music. Strictly from this point of view, from an inspirational point of view of sharing my story. I know that I have a purpose in the world."

Lovato has struggled with fame in the past, and has revealed an eating disorder as well as suicidal thoughts as a child. The new book will share the singer's "struggles ranging from addiction to depression, all the while on a search for self-discovery and happiness," according to E! News. "Demi has chronicled her journey in the media, in her song lyrics and to her 17 million followers on Twitter."

Things are looking up for the singer these days, but it wasn't always that way. She explained that there was a time when her life wasn't headed in such a positive direction.

"I'm battling with internal thoughts on how honest I should be," Lovato told Entertainment Weekly. "Yes, I've been very honest, but if people really knew how dark and deep my struggles got — not just with my eating disorder but with drugs and alcohol — they'd be really shocked. But I'll most likely end up saying everything. Maybe it'll help other people in the industry who are headed down the wrong path."